Plant Growing Guides

Oak

Quercus species

Oak

Quercus spp.

Ohia

Metrosideros polymorpha

Ohia Lehua

Metrosideros polymorpha

Ohia Palai

Metrosideros polymorpha

Ohi'a Wai

Syzygium sandwicense

Old Man Cactus

Cephalocereus senilis

Olive

Olea europaea

Olive Ball Sedum

Sedum burrito var. burrito or Sedum 'Olive Ball'

Olive Blenheim

Olea europaea 'Blenheim'

Olive Frantoio

Olea europaea 'Frantoio'

Olive Leaf

Olea europaea

Olive Tree

Olea europaea

Olive Tree Colossal

Olea europaea 'Colossal'

Olympian Fig

Ficus carica 'Olympian'

Ophir

Citrus × sinensis 'Ophir'

Optica Cristata

Haworthia retusa var. obtusa 'Optica Cristata'

Optica Gibbosa

Mammillaria gibbosa var. optice

Orange

Citrus × sinensis

Orange Dream Japanese Maple

Acer palmatum 'Orange Dream'

Orange Hibotan

Chamaecereus silvestrii var. orange

Orange Tree

Citrus × sinensis

Orchard Trees

Various species (Malus, Prunus, Pyrus, Juglans, etc.)

Orchard Trees and Vines

Various species (Malus, Prunus, Vitis, Pyrus, etc.)

Orchard Understory Trees

Various species (e.g., Malus, Prunus, Pyrus spp.)

Orchid Tree

Bauhinia variegata

Oregon Ash

Fraxinus latifolia

Oregon White Oak

Quercus garryana

Old Man of the Andes

Oreocereus neowerdmannianus

Orlando Tangerine

Citrus reticulata 'Orlando'

Ornamental Apple

Malus spp.

Ornamental Bark Trees

Various species (Betula, Acer, Prunus, Stewartia, etc.)

Ornamental Cherry

Prunus serrulata

Chinese Dunce Cap, Orostachys

Orostachys boehmeri

Dunce Cap Cactus

Orostachys iwarenge

Dunce Cap Cactus

Orostachys malacophyllus

Dunce Cap Cactus

Orostachys spinosa

Dunce Cap Cactus

Orostachys thyrsiflora

Oscularia

Oscularia deltoilles

Acacia (Other Species)

Acacia spp.

Agroforestry Trees

Various species (Alnus, Acacia, Gliricidia, Sesbania, Erythrina, etc.)

American Plum

Prunus americana

Apple (Other Varieties)

Malus domestica

Apple (Cross-Pollination Varieties)

Malus domestica

Apple (Pollination-Dependent Varieties)

Malus domestica

Stone Fruits (Apricot, Peach, Plum, Cherry)

Prunus spp. (P. armeniaca, P. persica, P. domestica, P. avium/cerasus)

Ariocarpus Species (Living Rock Cactus)

Ariocarpus spp.

Cacti (Various Species)

Cactaceae family (various genera)